Assessment of vehicle fire development in road tunnels for smoke control ventilation design

In a tunnel fire incident, creating a smoke free path for motorist evacuation and facilitating fire fighters to access the fire is critical for fire and rescue operations. A means of achieving this is to use ventilation fans to blow sufficient air down the tunnel ensuring no back-layering of smoke occurs upstream of the fire. This research thesis presents an approach to establish a design fire in a road tunnel particularly the peak heat release rate for emergency tunnel ventilation system design. The analysis consists of two stages; stage one involves the use of a probabilistic approach (risk analysis) to identify the potential cause and type of vehicle which could result in a tunnel fire. Findings from the risk analysis are used in stage two in which computational fluid II dynamics (CDF) modelling is used to establish the heat release rate in the tunnel considering factors such as fuel load, ventilation condition, tunnel geometry and ignition location. The effect of vehicle fire spread in road tunnel and numerical simulation of road tunnel fires using parallel processing is presented. Preliminary work in using fire dynamics simulator (FDS) for tunnel simulation work is discussed as part of the research work in this project. (a)

  • Corporate Authors:

    UNIVERSITY OF CANTERBURY. CIVIL AND NATURAL RESOURCES ENGINEERING

    PRIVATE BAG 4800
    CHRISTCHURCH,   New Zealand  8140
  • Authors:
    • CHEONG, M
  • Publication Date: 2009-8

Language

  • English

Media Info

  • Pagination: 405P

Subject/Index Terms

Filing Info

  • Accession Number: 01146878
  • Record Type: Publication
  • Source Agency: ARRB
  • Files: ITRD, ATRI
  • Created Date: Dec 24 2009 8:25AM